The project is an elementary school project with four buildings on the site.
1) Building A: main elementary building. Building is being fully replaced.
2) Building B: small building with some classrooms. Building is being renovated and HVAC replaced. Lighting is replaced. Previously conditioned by geothermal heat pumps and will now be conditioned by same plant that serves the replaced Building A. Some walls are moved around with some changes to space types (i.e. classroom area is now a library area). Built in late 90s.
3) Building C: building similar size as Building B. Renovated with HVAC not replaced. Lighting updated. Some walls moved around but I'd say same space types in constituent areas. Built in late 90s.
4) Building D: very small building. Renovated with HVAC not replaced. Lighting unchanged. Built in late 90s.
Certification goal is Silver. A mix of constructions is new to me. Given the above, are there circumstances under which all buildings don’t need to be included in the LEED boundary? Looks like to me that ASHRAE 90.1-2010 TABLE G3.1.2a thru 2b (all satisfied) allows excluding Buildings C and D on the condition that the envelope satisfies Sections 5 through 10. I expect the building envelope has been updated--but will check--to satisfy latest building codes of the locale which exceeds 90.1-2010, so that condition (G3.1.2a) is met. Could all buildings above be included in the LEED project boundary and therefore must be included in the model? The existing building without HVAC replaced might hurt or help the savings; probably hurt is my guess.
I think Buildings A and B are the only ones that need to be modeled but I believe the defined LEED project boundary supersedes that and all must be included.
LEEDuser Basic Member
3 thumbs up